You are viewing a plain text version of this content. The canonical link for it is here.

Posted to commits@nuttx.apache.org by xi...@apache.org on 2022/01/25 12:22:50 UTC

[incubator-nuttx] 06/06: Wipe the PMP configuration in MPFS bootloader start routine

This is an automated email from the ASF dual-hosted git repository.

xiaoxiang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git

commit fc3cd308d57fb76203575e9fc6d4d2d9e5296571
Author: Ville Juven <vi...@unikie.com>
AuthorDate: Fri Jan 14 11:49:07 2022 +0200

    Wipe the PMP configuration in MPFS bootloader start routine
    
    This way old PMP configurations are removed upon warm reset.
---
 arch/risc-v/src/mpfs/mpfs_head.S | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/risc-v/src/mpfs/mpfs_head.S b/arch/risc-v/src/mpfs/mpfs_head.S
index c3591a6..fe851b7 100755
--- a/arch/risc-v/src/mpfs/mpfs_head.S
+++ b/arch/risc-v/src/mpfs/mpfs_head.S
@@ -192,6 +192,10 @@ __start:
 
 .continue_boot:
 
+    /* Clear PMP */
+
+    csrw pmpcfg0, zero
+    csrw pmpcfg2, zero
 #endif
 
   /* Set stack pointer to the idle thread stack */